/**
 * 解析时间
 *
 * @export
 * @param {any} time
 * @param {any} cFormat
 * @returns
 */
export function parseTime(time, cFormat) {
    if (arguments.length === 0) {
        return null
    }
    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
    let date
    if (typeof time === 'object') {
        date = time
    } else {
        if (('' + time).length === 10) time = parseInt(time) * 1000
        date = new Date(time)
    }
    const formatObj = {
        y: date.getFullYear(),
        m: date.getMonth() + 1,
        d: date.getDate(),
        h: date.getHours(),
        i: date.getMinutes(),
        s: date.getSeconds(),
        a: date.getDay()
    }
    const timeStr = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
        let value = formatObj[key]
        if (key === 'a') {
            return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
        }
        if (result.length > 0 && value < 10) {
            value = '0' + value
        }
        return value || 0
    })
    return timeStr
}

/**
 * 格式化时间
 *
 * @export
 * @param {any} time
 * @param {any} option
 * @returns
 */
export function formatTime(time, option) {
    time = +time * 1000
    const d = new Date(time)
    const now = Date.now()

    const diff = (now - d) / 1000

    if (diff < 30) {
        return '刚刚'
    } else if (diff < 3600) {
        // less 1 hour
        return Math.ceil(diff / 60) + '分钟前'
    } else if (diff < 3600 * 24) {
        return Math.ceil(diff / 3600) + '小时前'
    } else if (diff < 3600 * 24 * 2) {
        return '1天前'
    }
    if (option) {
        return parseTime(time, option)
    } else {
        return (
            d.getMonth() +
            1 +
            '月' +
            d.getDate() +
            '日' +
            d.getHours() +
            '时' +
            d.getMinutes() +
            '分'
        )
    }
}

/**
 * 格式化时间
 *
 * @export
 * @param {any} url
 * @returns
 */
export function getQueryObject(url) {
    url = url == null ? window.location.href : url
    const search = url.substring(url.lastIndexOf('?') + 1)
    const obj = {}
    const reg = /([^?&=]+)=([^?&=]*)/g
    search.replace(reg, (rs, $1, $2) => {
        const name = decodeURIComponent($1)
        let val = decodeURIComponent($2)
        val = String(val)
        obj[name] = val
        return rs
    })
    return obj
}

/**
 *get getByteLen
 * @param {Sting} val input value
 * @returns {number} output value
 */
export function getByteLen(val) {
    let len = 0
    for (let i = 0; i < val.length; i++) {
        if (val[i].match(/[^\x00-\xff]/gi) != null) {
            len += 1
        } else {
            len += 0.5
        }
    }
    return Math.floor(len)
}

export function cleanArray(actual) {
    const newArray = []
    for (let i = 0; i < actual.length; i++) {
        if (actual[i]) {
            newArray.push(actual[i])
        }
    }
    return newArray
}

export function param(json) {
    if (!json) return ''
    return cleanArray(
        Object.keys(json).map(key => {
            if (json[key] === undefined) return ''
            return encodeURIComponent(key) + '=' + encodeURIComponent(json[key])
        })
    ).join('&')
}

export function param2Obj(url) {
    const search = url.split('?')[1]
    if (!search) {
        return {}
    }
    return JSON.parse(
        '{"' +
        decodeURIComponent(search)
        .replace(/"/g, '\\"')
        .replace(/&/g, '","')
        .replace(/=/g, '":"') +
        '"}'
    )
}

/**
 * html转文字
 *
 * @export
 * @param {any} val
 * @returns
 */
export function html2Text(val) {
    const div = document.createElement('div')
    div.innerHTML = val
    return div.textContent || div.innerText
}

export function objectMerge(target, source) {
    /* Merges two  objects,
       giving the last one precedence */

    if (typeof target !== 'object') {
        target = {}
    }
    if (Array.isArray(source)) {
        return source.slice()
    }
    for (const property in source) {
        if (source.hasOwnProperty(property)) {
            const sourceProperty = source[property]
            if (typeof sourceProperty === 'object') {
                target[property] = objectMerge(target[property], sourceProperty)
                continue
            }
            target[property] = sourceProperty
        }
    }
    return target
}

export function scrollTo(element, to, duration) {
    if (duration <= 0) return
    const difference = to - element.scrollTop
    const perTick = (difference / duration) * 10
    setTimeout(() => {
        console.log(new Date())
        element.scrollTop = element.scrollTop + perTick
        if (element.scrollTop === to) return
        scrollTo(element, to, duration - 10)
    }, 10)
}

export function toggleClass(element, className) {
    if (!element || !className) {
        return
    }
    let classString = element.className
    const nameIndex = classString.indexOf(className)
    if (nameIndex === -1) {
        classString += '' + className
    } else {
        classString =
            classString.substr(0, nameIndex) +
            classString.substr(nameIndex + className.length)
    }
    element.className = classString
}

export const pickerOptions = [{
        text: '今天',
        onClick(picker) {
            const end = new Date()
            const start = new Date(new Date().toDateString())
            end.setTime(start.getTime())
            picker.$emit('pick', [start, end])
        }
    },
    {
        text: '最近一周',
        onClick(picker) {
            const end = new Date(new Date().toDateString())
            const start = new Date()
            start.setTime(end.getTime() - 3600 * 1000 * 24 * 7)
            picker.$emit('pick', [start, end])
        }
    },
    {
        text: '最近一个月',
        onClick(picker) {
            const end = new Date(new Date().toDateString())
            const start = new Date()
            start.setTime(start.getTime() - 3600 * 1000 * 24 * 30)
            picker.$emit('pick', [start, end])
        }
    },
    {
        text: '最近三个月',
        onClick(picker) {
            const end = new Date(new Date().toDateString())
            const start = new Date()
            start.setTime(start.getTime() - 3600 * 1000 * 24 * 90)
            picker.$emit('pick', [start, end])
        }
    }
]

export function getTime(type) {
    if (type === 'start') {
        return new Date().getTime() - 3600 * 1000 * 24 * 90
    } else {
        return new Date(new Date().toDateString())
    }
}

export function debounce(func, wait, immediate) {
    let timeout, args, context, timestamp, result

    const later = function() {
        // 据上一次触发时间间隔
        const last = +new Date() - timestamp

        // 上次被包装函数被调用时间间隔last小于设定时间间隔wait
        if (last < wait && last > 0) {
            timeout = setTimeout(later, wait - last)
        } else {
            timeout = null
                // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
            if (!immediate) {
                result = func.apply(context, args)
                if (!timeout) context = args = null
            }
        }
    }

    return function(...args) {
        context = this
        timestamp = +new Date()
        const callNow = immediate && !timeout
            // 如果延时不存在，重新设定延时
        if (!timeout) timeout = setTimeout(later, wait)
        if (callNow) {
            result = func.apply(context, args)
            context = args = null
        }

        return result
    }
}

export function deepClone(source) {
    if (source === null) {
        throw new Error('error -> source is null')
    }
    if (!source && typeof source !== 'object') {
        throw new Error('error arguments', 'shallowClone')
    }
    const targetObj = source.constructor === Array ? [] : {}
    for (const keys in source) {
        if (source.hasOwnProperty(keys)) {
            if (source[keys] && typeof source[keys] === 'object') {
                targetObj[keys] = source[keys].constructor === Array ? [] : {}
                targetObj[keys] = deepClone(source[keys])
            } else {
                targetObj[keys] = source[keys]
            }
        }
    }
    return targetObj
}